207 lines
7.1 KiB
C
Executable File
207 lines
7.1 KiB
C
Executable File
/*
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* installer.c
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*/
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#include "installer.h"
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#include "memory.h"
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#include "fs.h"
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#include "crypto.h"
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#include "screeninit.h"
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#include "draw.h"
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#include "utils.h"
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#include "fatfs/sdmmc/sdmmc.h"
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static const u8 sectorHash[0x20] = {
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0x82, 0xF2, 0x73, 0x0D, 0x2C, 0x2D, 0xA3, 0xF3, 0x01, 0x65, 0xF9, 0x87, 0xFD, 0xCC, 0xAC, 0x5C,
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0xBA, 0xB2, 0x4B, 0x4E, 0x5F, 0x65, 0xC9, 0x81, 0xCD, 0x7B, 0xE6, 0xF4, 0x38, 0xE6, 0xD9, 0xD3
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};
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static const u8 firm0Hash[0x20] = {
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0x6E, 0x4D, 0x14, 0xAD, 0x51, 0x50, 0xA5, 0x9A, 0x87, 0x59, 0x62, 0xB7, 0x09, 0x0A, 0x3C, 0x74,
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0x4F, 0x72, 0x4B, 0xBD, 0x97, 0x39, 0x33, 0xF2, 0x11, 0xC9, 0x35, 0x22, 0xC8, 0xBB, 0x1C, 0x7D
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};
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static const u8 firm0A9lhHash[0x20] = {
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0x79, 0x3D, 0x35, 0x7B, 0x8F, 0xF1, 0xFC, 0xF0, 0x8F, 0xB6, 0xDB, 0x51, 0x31, 0xD4, 0xA7, 0x74,
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0x8E, 0xF0, 0x4A, 0xB1, 0xA6, 0x7F, 0xCD, 0xAB, 0x0C, 0x0A, 0xC0, 0x69, 0xA7, 0x9D, 0xC5, 0x04
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};
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static const u8 firm1Hash[0x20] = {
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0xD2, 0x53, 0xC1, 0xCC, 0x0A, 0x5F, 0xFA, 0xC6, 0xB3, 0x83, 0xDA, 0xC1, 0x82, 0x7C, 0xFB, 0x3B,
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0x2D, 0x3D, 0x56, 0x6C, 0x6A, 0x1A, 0x8E, 0x52, 0x54, 0xE3, 0x89, 0xC2, 0x95, 0x06, 0x23, 0xE5
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};
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int pos_y;
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u32 console;
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void main(void)
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{
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initScreens();
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//Determine if booting with A9LH
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u32 a9lhBoot = !PDN_SPI_CNT;
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//Detect the console being used
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console = PDN_MPCORE_CFG == 7;
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drawString(TITLE, 10, 10, COLOR_TITLE);
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pos_y = drawString("Thanks to delebile, #cakey and StandardBus", 10, 40, COLOR_WHITE);
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pos_y = drawString(a9lhBoot ? "Press SELECT to update A9LH, START to uninstall" : "Press SELECT for a full install", 10, pos_y + SPACING_Y, COLOR_WHITE);
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pos_y = drawString("Press any other button to shutdown", 10, pos_y, COLOR_WHITE);
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u32 pressed = waitInput();
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if(pressed == BUTTON_SELECT) installer(a9lhBoot);
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if(pressed == BUTTON_START && a9lhBoot) uninstaller();
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shutdown(0, NULL);
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}
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static inline void installer(u32 a9lhBoot)
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{
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mountSD();
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const char *path;
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u32 updatea9lh = 0;
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//If making a first install, we need the OTP
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if(!a9lhBoot)
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{
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//Read OTP
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path = "a9lh/otp.bin";
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if(fileRead((void *)OTP_OFFSET, path) != 256)
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{
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u8 zeroes[256] = {0};
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if(memcmp((void *)OTP_FROM_MEM, zeroes, 256) == 0)
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shutdown(1, "Error: otp.bin doesn't exist and can't be dumped");
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fileWrite((void *)OTP_FROM_MEM, path, 256);
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memcpy((void *)OTP_OFFSET, (void *)OTP_FROM_MEM, 256);
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}
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}
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//Setup the key sector de/encryption with the SHA register or otp.bin
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setupKeyslot0x11(a9lhBoot, (void *)OTP_OFFSET);
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//Calculate the CTR for the 3DS partitions
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getNandCTR();
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//Get NAND FIRM0 and test that the CTR is correct
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readFirm0((u8 *)FIRM0_OFFSET, FIRM0_SIZE);
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if(memcmp((void *)FIRM0_OFFSET, "FIRM", 4) != 0)
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shutdown(1, "Error: failed to setup FIRM encryption");
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//If booting from A9LH or on N3DS, we can use the key sector from NAND
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if(a9lhBoot || console)
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{
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getSector((u8 *)SECTOR_OFFSET);
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u32 i;
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for(i = 0; i < 3; i++)
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if(memcmp((void *)(SECTOR_OFFSET + 0x10), key2s[i], 0x10) == 0) break;
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if(i == 3) shutdown(1, a9lhBoot ? "Error: the OTP hash or the NAND key sector\nare invalid" :
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"Error: the otp.bin or the NAND key sector\nare invalid");
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else if(i == 1) updatea9lh = 1;
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}
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else
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{
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//Read decrypted key sector
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path = "a9lh/secret_sector.bin";
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if(fileRead((void *)SECTOR_OFFSET, path) != 0x200)
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shutdown(1, "Error: secret_sector.bin doesn't exist or has\na wrong size");
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if(!verifyHash((void *)SECTOR_OFFSET, 0x200, sectorHash))
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shutdown(1, "Error: secret_sector.bin is invalid or corrupted");
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}
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if(!a9lhBoot || updatea9lh)
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{
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//Generate and encrypt a per-console A9LH key sector
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generateSector((u8 *)SECTOR_OFFSET, 0);
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//Read FIRM0
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path = "a9lh/firm0.bin";
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if(fileRead((void *)FIRM0_OFFSET, path) != FIRM0_SIZE)
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shutdown(1, "Error: firm0.bin doesn't exist or has a wrong size");
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if(!verifyHash((void *)FIRM0_OFFSET, FIRM0_SIZE, firm0Hash))
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shutdown(1, "Error: firm0.bin is invalid or corrupted");
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}
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else if(!verifyHash((void *)FIRM0_OFFSET, SECTION2_POSITION, firm0A9lhHash))
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shutdown(1, "Error: NAND FIRM0 is invalid");
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if(!a9lhBoot)
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{
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//Read FIRM1
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path = "a9lh/firm1.bin";
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if(fileRead((void *)FIRM1_OFFSET, path) != FIRM1_SIZE)
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shutdown(1, "Error: firm1.bin doesn't exist or has a wrong size");
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if(!verifyHash((void *)FIRM1_OFFSET, FIRM1_SIZE, firm1Hash))
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shutdown(1, "Error: firm1.bin is invalid or corrupted");
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}
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//Inject stage1
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memset32((void *)STAGE1_OFFSET, 0, MAX_STAGE1_SIZE);
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path = "a9lh/payload_stage1.bin";
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u32 size = fileRead((void *)STAGE1_OFFSET, path);
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if(!size || size > MAX_STAGE1_SIZE)
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shutdown(1, "Error: payload_stage1.bin doesn't exist or\nexceeds max size");
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//Read stage2
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memset32((void *)STAGE2_OFFSET, 0, MAX_STAGE2_SIZE);
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path = "a9lh/payload_stage2.bin";
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size = fileRead((void *)STAGE2_OFFSET, path);
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if(!size || size > MAX_STAGE2_SIZE)
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shutdown(1, "Error: payload_stage2.bin doesn't exist or\nexceeds max size");
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pos_y = drawString("All checks passed, installing...", 10, pos_y + SPACING_Y, COLOR_WHITE);
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//Point of no return, install stuff in the safest order
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sdmmc_nand_writesectors(0x5C000, 0x20, (vu8 *)STAGE2_OFFSET);
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if(!a9lhBoot) writeFirm((u8 *)FIRM1_OFFSET, 1, FIRM1_SIZE);
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if(!a9lhBoot || updatea9lh) sdmmc_nand_writesectors(0x96, 1, (vu8 *)SECTOR_OFFSET);
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writeFirm((u8 *)FIRM0_OFFSET, 0, FIRM0_SIZE);
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shutdown(2, a9lhBoot ? "Update: success!" : "Full install: success!");
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}
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static inline void uninstaller(void)
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{
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if(console)
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{
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setupKeyslot0x11(1, NULL);
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getSector((u8 *)SECTOR_OFFSET);
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if(memcmp((void *)(SECTOR_OFFSET + 0x10), key2s[1], 0x10) != 0 && memcmp((void *)(SECTOR_OFFSET + 0x10), key2s[2], 0x10) != 0)
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shutdown(1, "Error: incorrect NAND keystore");
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generateSector((u8 *)SECTOR_OFFSET, 1);
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}
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else memset32((void *)SECTOR_OFFSET, 0, 0x200);
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mountCTRNAND();
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switch(firmRead((void *)FIRM0_OFFSET))
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{
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case 1:
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shutdown(1, "Error: more than one FIRM cxi has been detected");
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break;
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case 2:
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shutdown(1, "Error: a FIRM equal or newer than 11.0\n has been detected");
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break;
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default:
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break;
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}
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u32 firmSize = decryptExeFs((void *)FIRM0_OFFSET);
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memcpy((void *)FIRM1_OFFSET, (void *)FIRM0_OFFSET, firmSize);
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memset32((void *)STAGE2_OFFSET, 0, MAX_STAGE2_SIZE);
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pos_y = drawString("All checks passed, uninstalling...", 10, pos_y + SPACING_Y, COLOR_WHITE);
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writeFirm((u8 *)FIRM0_OFFSET, 0, firmSize);
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writeFirm((u8 *)FIRM1_OFFSET, 1, firmSize);
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sdmmc_nand_writesectors(0x96, 1, (vu8 *)SECTOR_OFFSET);
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sdmmc_nand_writesectors(0x5C000, 0x20, (vu8 *)STAGE2_OFFSET);
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shutdown(2, "Uninstall: success!");
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} |